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Daily UK grid report
UK Electricity Grid Daily Report — 18 December 2023

On 18 December 2023, Britain’s electricity grid averaged 36.05 GW of grid demand, with renewables averaging 60.7% of tracked domestic generation and carbon intensity averaging 107 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 36.05 GW

Average grid demand for this UK day.

Peak demand 44.54 GW

Highest 15-minute grid demand period.

Avg carbon 107 gCO₂/kWh

Average carbon intensity where available.

Renewables 60.7 %

Average renewable share of tracked generation.

Average grid demandDemand
36.05 GWFull-day average from available snapshots
↑ +2.70 GW vs yesterday
Peak demand16:30
44.54 GWHighest 15-minute grid demand period
↑ +4.40 GW vs yesterday
Lowest demand03:45
26.16 GWLowest 15-minute grid demand period
↓ −2.19 GW vs yesterday
Domestic generationSupply
34.06 GWTracked UK generation sources only
↑ +2.62 GW vs yesterday
Average carbonCO₂
107 gCO₂/kWhCarbon intensity average
↑ +45 g vs yesterday
Renewable shareClean
60.7 %Wind, solar, hydro and biomass
↓ −9.7 pts vs yesterday
Clean share+ Nuclear
75.0 %Renewables plus nuclear
↓ −10.4 pts vs yesterday
Net importsFlow
-0.12 GWAverage imports minus exports
↓ −0.52 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 18 December 2023, Britain’s electricity grid averaged 36.05 GW of grid demand, with renewables averaging 60.7% of tracked domestic generation and carbon intensity averaging 107 gCO₂/kWh.

The highest demand period was 44.54 GW at 16:30, while the lowest carbon intensity period was 63 gCO₂/kWh at 02:30.

Key records for 18 December 2023

Highest wind20.04 GW15:00
Highest solar0.74 GW11:30
Highest gas12.88 GW17:30
Lowest carbon63 gCO₂/kWh02:30
Highest imports3.84 GW21:00
Highest exports4.24 GW06:15

Daily chart

Demand, generation and carbon intensity

18 December 2023

Generation mix

Wind, solar, gas and interconnector flow